<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <input type="checkbox" id="checkbox" v-model="checked">
        <label for="checkbox">{{checked}}</label>
    </div>
</body>
<script src="https://cdn.jsdelivr.net/npm/vue@2.5.21/dist/vue.js"></script>
<script>
    new Vue({
        el:'#app',
        data () {
            return {
                checked:false
            }
        }
    })
</script>
</html>